Beschreibung
A logic error in the ln utility of uutils coreutils allows the utility to dereference a symbolic link target even when the --no-dereference (or -n) flag is explicitly provided. The implementation previously only honored the -no-dereference- intent if the --force (overwrite) mode was also enabled. This flaw causes ln to follow a symbolic link that points to a directory and create new links inside that target directory instead of treating the symbolic link itself as the destination. In environments where a privileged user or system script uses ln -n to update a symlink, a local attacker could manipulate existing symbolic links to redirect file creation into sensitive directories, potentially leading to unauthorized file creation or system misconfiguration.
- Veröffentlicht
- 2026-04-22 17:16:41
- Betroffene Versionen
- unknown
- Typ
- Core software
- Vektor
- CVSS:3.1/AV:L/AC:L/PR:L/UI:R/S:U/C:N/I:H/A:N